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Old 10-25-2013, 07:51 AM
CantRepeat's Avatar
CantRepeat CantRepeat is online now
Join Date: Jul 2008
Boat: 06 X30
Location: Roll Tide!!
Posts: 13,700
There should be no more then +/- 10% difference between the lowest and highest readings.

In your case, if I math this up correctly.

% difference = 100 - (172 / 145 * 100) = 15.69%

This is greater then the standard norm of +/- 10% so you do have a problem some where. I would couple this test with the fact you used 1.5+ quarts of oil in 50 hours.

You can do a wet test to isolate the issue to rings or valves.

So the 64k question is how long can I run the motor like this?

I don't know. It could continue to run ok for a long time or it could get worse in a couple of weeks.

Maybe enginenut will be around to give more guidance.
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